/* ============================================
   POSTURE-SENSE DESIGN SYSTEM
   Futuristic · Minimal · Vibrant
   ============================================ */

:root {
  /* Base tones — cool obsidian */
  --ink-0: #05050a;
  --ink-1: #0a0a12;
  --ink-2: #10101c;
  --ink-3: #181827;
  --ink-4: #242438;
  --ink-5: #3a3a55;

  /* Foreground */
  --fg-0: #ffffff;
  --fg-1: #e8e8f5;
  --fg-2: #a8a8c4;
  --fg-3: #6b6b88;
  --fg-4: #43435a;

  /* Accents — same chroma, different hues */
  --cyan: oklch(0.82 0.17 195);
  --cyan-soft: oklch(0.82 0.17 195 / 0.15);
  --magenta: oklch(0.70 0.24 330);
  --magenta-soft: oklch(0.70 0.24 330 / 0.15);
  --lime: oklch(0.88 0.22 135);
  --lime-soft: oklch(0.88 0.22 135 / 0.15);
  --amber: oklch(0.82 0.18 75);

  /* Semantic */
  --success: var(--lime);
  --warning: var(--amber);
  --danger: oklch(0.68 0.22 25);

  /* Grid & gradients */
  --grid-line: rgba(168, 168, 196, 0.06);
  --grid-line-strong: rgba(168, 168, 196, 0.12);
  --glow-cyan: radial-gradient(ellipse at center, oklch(0.82 0.17 195 / 0.35), transparent 70%);
  --gradient-hero: linear-gradient(135deg, oklch(0.82 0.17 195) 0%, oklch(0.70 0.24 330) 100%);
  --gradient-hero-soft: linear-gradient(135deg, oklch(0.82 0.17 195 / 0.2) 0%, oklch(0.70 0.24 330 / 0.2) 100%);

  /* Spacing scale */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 64px;
  --s-9: 96px;
  --s-10: 128px;

  /* Radius */
  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 20px;
  --r-xl: 28px;

  /* Type */
  --font-display: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--ink-0);
  color: var(--fg-1);
  font-family: var(--font-display);
  font-feature-settings: 'ss01', 'ss02';
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

/* ============== TYPOGRAPHY ============== */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-2);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--cyan);
}
.eyebrow.no-rule::before { display: none; }

.mono { font-family: var(--font-mono); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0;
  color: var(--fg-0);
}
h1 { font-size: clamp(48px, 7vw, 96px); letter-spacing: -0.035em; }
h2 { font-size: clamp(32px, 4.5vw, 56px); }
h3 { font-size: clamp(22px, 2.5vw, 32px); }
p { color: var(--fg-2); line-height: 1.55; margin: 0; }

.grad-text {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ============== TOP NAV ============== */
.ps-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  backdrop-filter: blur(20px) saturate(140%);
  background: rgba(10, 10, 18, 0.72);
  border-bottom: 1px solid rgba(168, 168, 196, 0.08);
}
.ps-nav-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.ps-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.01em;
  color: var(--fg-0);
}
.ps-logo-mark {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: var(--gradient-hero);
  position: relative;
  display: grid;
  place-items: center;
}
.ps-logo-mark::after {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--ink-0);
  box-shadow: 0 0 0 1.5px white inset;
}
.ps-logo .dot { color: var(--cyan); }

.ps-navmenu {
  display: flex;
  gap: 4px;
  align-items: center;
}
.ps-navmenu a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  padding: 8px 14px;
  color: var(--fg-2);
  border-radius: var(--r-sm);
  transition: all 0.2s;
  text-transform: lowercase;
}
.ps-navmenu a:hover { color: var(--fg-0); background: rgba(255,255,255,0.04); }
.ps-navmenu a.active { color: var(--cyan); background: var(--cyan-soft); }

.ps-nav-cta {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ============== BUTTONS ============== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.005em;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  background: transparent;
  color: var(--fg-1);
  line-height: 1;
}
.btn-primary {
  background: var(--fg-0);
  color: var(--ink-0);
  border-color: var(--fg-0);
}
.btn-primary:hover { background: var(--cyan); border-color: var(--cyan); color: var(--ink-0); transform: translateY(-1px); }
.btn-ghost {
  background: rgba(255,255,255,0.04);
  color: var(--fg-1);
  border-color: rgba(255,255,255,0.1);
}
.btn-ghost:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.2); }
.btn-accent {
  background: var(--cyan);
  color: var(--ink-0);
}
.btn-accent:hover { background: var(--fg-0); transform: translateY(-1px); }
.btn-lg { padding: 16px 28px; font-size: 15px; }
.btn-sm { padding: 8px 14px; font-size: 12px; }
.btn svg, .btn .ico { width: 14px; height: 14px; }

/* ============== CARDS & PANELS ============== */
.panel {
  background: rgba(24, 24, 39, 0.5);
  border: 1px solid rgba(168, 168, 196, 0.08);
  border-radius: var(--r-lg);
  backdrop-filter: blur(12px);
  position: relative;
}
.panel-glow {
  background:
    radial-gradient(circle at 0% 0%, var(--cyan-soft), transparent 40%),
    rgba(24, 24, 39, 0.5);
}

.hairline { border-top: 1px solid rgba(168, 168, 196, 0.08); }
.hairline-v { border-left: 1px solid rgba(168, 168, 196, 0.08); }

/* ============== FORM ============== */
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.field label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.field input, .field textarea {
  background: var(--ink-1);
  border: 1px solid rgba(168, 168, 196, 0.12);
  border-radius: var(--r-md);
  padding: 14px 16px;
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--fg-0);
  outline: none;
  transition: all 0.2s;
}
.field input:focus, .field textarea:focus {
  border-color: var(--cyan);
  background: var(--ink-2);
  box-shadow: 0 0 0 3px var(--cyan-soft);
}
.field input::placeholder { color: var(--fg-4); }

/* ============== BADGES ============== */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  border-radius: 999px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(168, 168, 196, 0.12);
  color: var(--fg-1);
}
.chip.cyan { color: var(--cyan); background: var(--cyan-soft); border-color: transparent; }
.chip.magenta { color: var(--magenta); background: var(--magenta-soft); border-color: transparent; }
.chip.lime { color: var(--lime); background: var(--lime-soft); border-color: transparent; }

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lime);
  position: relative;
}
.pulse-dot::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: var(--lime);
  opacity: 0.4;
  animation: ping 1.8s cubic-bezier(0, 0, 0.2, 1) infinite;
}
@keyframes ping {
  0% { transform: scale(0.6); opacity: 0.6; }
  100% { transform: scale(2); opacity: 0; }
}

/* ============== CONTAINER ============== */
.wrap {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 1;
}
.wrap-narrow { max-width: 1120px; margin: 0 auto; padding: 0 32px; position: relative; z-index: 1; }

/* ============== FOOTER ============== */
.ps-footer {
  border-top: 1px solid rgba(168, 168, 196, 0.08);
  padding: 64px 0 32px;
  margin-top: 96px;
  position: relative;
  z-index: 1;
}
.ps-footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 48px;
  padding-bottom: 48px;
}
.ps-footer h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 20px;
}
.ps-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.ps-footer ul a { color: var(--fg-2); font-size: 14px; transition: color 0.2s; }
.ps-footer ul a:hover { color: var(--cyan); }
.ps-footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-3);
  letter-spacing: 0.05em;
  padding-top: 32px;
  border-top: 1px solid rgba(168, 168, 196, 0.06);
}

/* ============== SCANNER / HUD ============== */
.hud-corners {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hud-corners::before,
.hud-corners::after,
.hud-corner-bl,
.hud-corner-br {
  content: '';
  position: absolute;
  width: 14px; height: 14px;
  border: 1px solid var(--cyan);
}
.hud-corners::before { top: 12px; left: 12px; border-right: 0; border-bottom: 0; }
.hud-corners::after { top: 12px; right: 12px; border-left: 0; border-bottom: 0; }

@keyframes scan {
  0% { transform: translateY(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(100%); opacity: 0; }
}
@keyframes rotate { to { transform: rotate(360deg); } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.fade-up { animation: fadeUp 0.6s cubic-bezier(.2,.7,.2,1) both; }

/* Responsive */
@media (max-width: 880px) {
  .ps-navmenu { display: none; }
  .ps-nav-inner { padding: 14px 20px; }
  .wrap, .wrap-narrow { padding: 0 20px; }
  .ps-footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .ps-footer-bottom { flex-wrap: wrap; gap: 8px; }
}
@media (max-width: 480px) {
  .wrap, .wrap-narrow { padding: 0 16px; }
  .ps-footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .ps-footer-bottom { flex-direction: column; align-items: flex-start; gap: 4px; }
  .ps-footer { padding: 40px 0 24px; margin-top: 48px; }
}